Problems in the thermal investigation of the BaF2-YF3 system

The BaF 2 -YF 3 system was partially investigated, with focus given to the BaY 2 F 8 compound and its neighboring phases. In this report, various difficulties that hinder the thermal analysis investigation of this binary fluoride system are described in detail. Samples of various compositions rangin...

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Veröffentlicht in:	Journal of thermal analysis and calorimetry 2009-01, Vol.95 (1), p.43-48
Hauptverfasser:	Nakamura, G. H. G., Baldochi, S. L., Mazzocchi, V. L., Parente, C. B. R., Valério, M. E. G., Klimm, D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical Chemistry Chemistry Chemistry and Materials Science Exact sciences and technology General and physical chemistry Inorganic Chemistry Measurement Science and Instrumentation Phase equilibria Physical Chemistry Polymer Sciences
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	The BaF 2 -YF 3 system was partially investigated, with focus given to the BaY 2 F 8 compound and its neighboring phases. In this report, various difficulties that hinder the thermal analysis investigation of this binary fluoride system are described in detail. Samples of various compositions ranging from 58 to 79% YF 3 were prepared and subjected to thermal analysis (DTA, TG and DSC) and X-ray diffraction. Diffraction patterns were analyzed through the Rietveld method for the calculation of phase concentrations in samples and determination of the lattice parameters of monoclinic BaY 2 F 8 . Thermal results were compared with data from the literature and discrepancies were found.
ISSN:	1388-6150 1588-2926 1572-8943
DOI:	10.1007/s10973-008-9005-3